Millimeter of mercury. A millimeter of mercury is a manometric unit of pressure, formerly defined as the extra pressure generated by a column of mercury one millimetre high and now defined as precisely 7002133322387415000â 133.322387415 pascals. It is denoted by the symbol mmHg. Although not an SI unit, the millimeter of mercury is still routinely used in medicine, meteorology, aviation, and many other scientific fields. One millimeter of mercury is approximately 1 torr, which is 1/760 of standard atmospheric ...
Vitrectomy is when the eye surgeon removes the vitreous from the inside of the eye. Pars plana vitrectomy is a general term for a group of operations on the deeper part of the eye, all of which involve the removal of some or all of the vitreous â the eyeâs clear internal jelly. Pars plana vitrectomy eye surgery is sometimes done to remove eye floaters or vitreous hemorrhage inside the eyeball. In a vitrectomy, the surgeon âvacuumsâ out the normally clear, jelly-like fluid that fills the inside of the eye, the vitreous humor, with a surgical instrument called a vitrector. The vitrectomy procedure
Cataract Surgery after Vitrectomy. I've read that Cataract surgery after one has a Vitrectomy is riskier due to the thinner Saline Vitreous fluid behind the lens capsular sac=less support on the sac that holds the lens during Cataract removal and replacement.y vitrectomy induced cataract had that eye at 20/400 vision before the surgery. I saw great improvement the day after cataract surgery...but almost anything is better than 20/400! Actually, with my previous scar tissue (ERM) and vitrectomy on that eye, the retina had some tugging and swelling that has not gone away.